This tastes about as good as it looks but it's pretty cheap for those macros. I usually use fresh vegetables instead of canned and add some type of sauce, whether it's BBQ or Sriracha. It actually tastes pretty good with mushrooms and onions and some flavor.
The nutrition information above is assuming you use a whole cup of mayonnaise - you can use light mayonnaise as well as a lot less than a cup if you don't mind it being a little less creamy. I only used a 1/2 cup and it turned out well.